Have you seen Pitch Meeting on YouTube? Just pick a recent one and watch it. Lots of examples of bad writing like this trope you mention.

That said, it can be difficult to write a story if everyone knows everything all the time. That's why many books are set in fantasy worlds, pre-cell phone eras, or space settings without instantaneous communication. In modern situations, cell phones often mysteriously lose signal or run out of power, or people fail to pick up.

It's a bit like how in kung fu movies the bad guys can't use their guns ("Stop! This entire room is filled with explosives!"), or they get knocked away, or they miss a shot or two and then run out of bullets, or the movie is set in pre-gun eras. It sort of makes it hard to sustain the central conceit if a bad guy can just pull out a handgun and shoot Bruce Lee or Jackie Chan.